void main() f struct student s30 int i sub for(i=0;i<30;i+){ Scanno/os S%d%d", si] name, &s i]. math &si. eng); s[iaver=(s1. math+si]. eng)/2.0void main( ) { struct student s[30]; int i, sub; for(i=0; i<30; i++) { scanf("%s%d%d", s[i].name, &s[i].math, &s[i].eng); s[i].aver = (s[i].math+s[i].eng)/2.0 }